Browsing by Author "Życzkowski, Piotr"
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Item type:Article, Access status: Open Access , Analiza pracy górniczej chłodziarki powietrza pośredniego działania z wewnętrznym wymiennikiem ciepła(Wydawnictwa AGH, 2011) Życzkowski, PiotrAn analysis of work of mine air compression refrigerator TS-450P type with internal heat exchanger was described in this article. Influence of internal heat exchanger on main parameters of work of air compression refrigerator: refrigeration capacity, specific compression work and refrigerating capacity coefficient was demonstrated.Item type:Article, Access status: Open Access , Analiza wpływu wewnętrznego wymiennika ciepła na moc cieplną górniczych chłodziarek powietrza(Wydawnictwa AGH, 2010) Życzkowski, PiotrAn use of internal heat exchanger (IHX) in refrigerating system allows increasing the refrigerating capacity of refrigerators. The analysis of the changes of thermal power and refrigerating capacity of TS-300 and TS-450P mining refrigerators types with internal heat exchanger were described in this article.Item type:Doctoral Dissertation, Access status: Restricted , Badania chłodziarki powietrza z poślizgiem temperatury czynnika chłodniczego i wewnętrznym wymiennikiem ciepła(Data obrony: 2012) Życzkowski, Piotr
Wydział Górnictwa i GeoinżynieriiIn a dissertation a mathematical description of work of air indirect refrigerator type TS-450P in steady state with temperature glide during phase change of the refrigerant R407C and the presence of an internal heat exchanger was presented. Created mathematical model includes following equations: the power equations of heat exchangers, isenthalpe equation for the expansion valve and refrigerant vapour compression equation with the isentropic efficiency. Proving linear variation of isobars during phase change of refrigerant R407C, the phenomenon of temperature glide was included in the calculation of evaporator. Thermodynamic and transport properties of R407C refrigerant were described by 23 relationships for the subcooled region, saturated liquid, two-phase region, saturated vapour and superheated vapour. Obtained results were compared with in situ measurements of the refrigerator parameters. The results of the dissertation can be used in practice, not only in the description of the TS-450P refrigerators parameters, but also in calculations, which require knowledge of the thermodynamic and transport properties of R407C refrigerant.Item type:Thesis, Access status: Restricted , Charakterystyka energetyczna budynku jednorodzinnego dla różnych wariantów konstrukcji przegród i instalacji wewnętrznych(Data obrony: 2021-02-04) Rusiecka, Weronika
Wydział Górnictwa i GeoinżynieriiItem type:Article, Access status: Open Access , Gospodarcze wykorzystanie metanu z odmetanowania pokładów węgla polskich kopalń węgla kamiennego(2006) Nawrat, Stanisław; Kuczera, Zbigniew; Łuczak, Rafał; Napieraj, Sebastian; Życzkowski, PiotrMethane occurs in coal exploitation for the sake of explosion is the biggest threats for mining crew's and for production. In coal mines basic method for reduce methane threats are: - intensive ventilation of excavations, - drainage. Methaneted in Polish coal mines is very high, in year 2004 - 825 m$^3$ $CH_4$, drainage - 250 m$^3$ $CH_4$. Coal bed methane is move by ventilation process from underground to the atmosphere. Methane moved by ventilation process, and drainage in view of lack possibility for full use, cause greenhouse effect unprofitable ecological effect. Methane from drainage can be use as low concentration fuel for heat plant, eg. gas turbine, gas engines, heat boilers. In Poland low concentration methane is use in a lot of plants e.g. Jastrzębie Coal Company, but global economical index is only 53%. Analyse show possibility of use low concentration methane from coal bed drainage, but necessary is take activity in following ranges improvement of use low concentration methane from coal bed drainage (still about 42% methane is send to atmosphere) as fuel for: gas burners carbon boilers, carbon boilers, gas engines for heat and electrical power. Accustoming on industrial scale installation and technology for clean-up of gas from drainage, there be air-methane mixture, from air, that will allow to get fuel about business parameters (96% $CH_4$) for general application in gas installations. Limitation of methane emission from coal bed in mining process by use intensive drainage systems, but indispensable condition is possibility of use low concentration methane as fuel in heat and electrician plants.Item type:Thesis, Access status: Restricted , Klimatyzacja dużych obiektów na przykładzie hali sportowej(Data obrony: 2016-01-29) Urbaniak, Piotr
Wydział Górnictwa i GeoinżynieriiItem type:Article, Access status: Open Access , Model fazy dyskretnej przepływu powietrza z wykropleniem pary wodnej(Wydawnictwa AGH, 2010) Branny, Marian; Nowak, Bernard; Ptaszyński, Bogusław; Kuczera, Zbigniew; Łuczak, Rafał; Życzkowski, PiotrThe paper describes the use of the discrete phase model to describe the movement of air in the vertical ventilation shafts with condensation of water vapor. Conditions under which discrete phase model can be used were verified and the results of performed calculations were presented. The results were obtained fo vertical movement up to the drops of water in the shaft.Item type:Article, Access status: Open Access , Niektóre problemy z wykorzystaniem metanu z odmetanowania w Spółce Energetycznej Jastrzębie SA(2008) Nawrat, Stanisław; Kuczera, Zbigniew; Łuczak, Rafał; Życzkowski, PiotrA methane-aerial mixture is caught by demethanation system. This mixture can be used as a low-methane fuel in different kinds of heating-power engineering installations. Jastrzebie Energetic Company is the biggest energetic plant in Poland, where mixture from demethanation of mines is used as a fuel for electric energy and heat production. In this article is paid an attention to possibilities of improvement and extension of economical utilization of methane, which is caught by demethanation system. An analysis of intake, utilization and transport of gas mixture to consumers, who are associated in energetic company, are realized. Activity of Jastrzebie Energetic Company from 2000 to 2005 is analyzed. The technical state of gas installation, quantity and losses of gas, present and planned modernization of main conduit and demethanation system are taken into account.Item type:Article, Access status: Open Access , Problemy zapewnienia stabilnych parametrów paliwa z odmetanowania kopalń stosowanego do silników gazowych(2006) Nawrat, Stanisław; Kuczera, Zbigniew; Łuczak, Rafał; Życzkowski, PiotrGases from demethanation of hard coal beds are low-methane fuels, which can be used in different kinds of heating and power engineering systems, i.e. in boilers with gas burner, engines and gas turbines. Assurance of high stability of quantitative and qualitative parameters is serious problem, which makes difficulty with right exploitation of that installations. This article presents the requirements for gases from demethanation, which are used for feeding the heating-power engineering installation, and possibilities, which burn gases from demethanation from hard coal mine »Budryk«, the influence of non-stable parameters of fuel on installation work and technical solutions, which provide the stabilization of quantitative and qualitative parameters of gases from demethanation, are discussed.Item type:Thesis, Access status: Restricted , Projekt instalacji klimatyzacji dla sali teatralnej(Data obrony: 2016-01-21) Sokołowska, Justyna
Wydział Górnictwa i GeoinżynieriiItem type:Thesis, Access status: Restricted , Projekt instalacji klimatyzacyjnej dla dużych pomieszczeń na przykładzie kina(Data obrony: 2015-01-26) Korta, Ewelina
Wydział Górnictwa i GeoinżynieriiItem type:Thesis, Access status: Restricted , Projekt instalacji klimatyzacyjnej dla obiektu biurowego(Data obrony: 2015-01-26) Kozak, Magdalena
Wydział Górnictwa i GeoinżynieriiItem type:Thesis, Access status: Restricted , Projekt instalacji klimatyzacyjnej dla obiektu biurowego(Data obrony: 2014-01-28) Kowalczyk, Michał
Wydział Górnictwa i GeoinżynieriiItem type:Thesis, Access status: Restricted , Projekt instalacji klimatyzacyjnej dla obiektu biurowego(Data obrony: 2014-01-27) Lisak, Marcin
Wydział Górnictwa i GeoinżynieriiItem type:Thesis, Access status: Restricted , Projekt instalacji klimatyzacyjnej dla obiektu biurowego(Data obrony: 2016-01-29) Marusiak, Eliza
Wydział Górnictwa i GeoinżynieriiItem type:Thesis, Access status: Restricted , Projekt instalacji klimatyzacyjnej dla obiektu biurowego(Data obrony: 2016-01-29) Stępka, Sylwia
Wydział Górnictwa i GeoinżynieriiItem type:Thesis, Access status: Restricted , Projekt instalacji klimatyzacyjnej dla obiektu użyteczności publicznej(Data obrony: 2021-02-10) Lipski, Jonasz
Wydział Górnictwa i GeoinżynieriiItem type:Thesis, Access status: Restricted , Projekt instalacji klimatyzacyjnej dla obiektu użyteczności publicznej na przykładzie hotelu(Data obrony: 2015-01-26) Osysko, Joanna
Wydział Górnictwa i GeoinżynieriiItem type:Thesis, Access status: Restricted , Projekt instalacji klimatyzacyjnej dla obiektu użyteczności publicznej na przykładzie laboratorium(Data obrony: 2015-01-26) Matys, Aleksandra
Wydział Górnictwa i GeoinżynieriiItem type:Thesis, Access status: Restricted , Projekt instalacji klimatyzacyjnej dla sali konferencyjnej(Data obrony: 2016-01-21) Sokołowski, Bartłomiej
Wydział Górnictwa i Geoinżynierii